boffintech
Civil/Environmental
- Jul 29, 2005
- 469
Am inspecting on job right now where a number of the columns have an unusual column dowel arrangement.
At each bent, 3 columns (A, B, and C) support an inverted “T” beam which in turn supports pre-cast pre-stressed bridge segments for a flyover roadway. In one area several bents in a row feature an “A” column with a non-contact lap between the dowels extending from the ftg and the vertical bars in the column.
Column is 4’6” x 6’ with 26 # 11 bars. The short side of the column has 5 verts: one in each corner with remaining 3 equal spaced. However, there are no dowels in the corners or on the 6’ sides of the column. Only the 3 equal spaced verts on the short sides have contact laps with dowels. The remaining 16 (not 20) dowels are in line long-ways with the 2nd and 4th position dowels.
Both the plan view detail and the cross-section detail show the dowels inset.
Any idea what forces would require this sort of dowel arrangement?
At each bent, 3 columns (A, B, and C) support an inverted “T” beam which in turn supports pre-cast pre-stressed bridge segments for a flyover roadway. In one area several bents in a row feature an “A” column with a non-contact lap between the dowels extending from the ftg and the vertical bars in the column.
Column is 4’6” x 6’ with 26 # 11 bars. The short side of the column has 5 verts: one in each corner with remaining 3 equal spaced. However, there are no dowels in the corners or on the 6’ sides of the column. Only the 3 equal spaced verts on the short sides have contact laps with dowels. The remaining 16 (not 20) dowels are in line long-ways with the 2nd and 4th position dowels.
Both the plan view detail and the cross-section detail show the dowels inset.
Any idea what forces would require this sort of dowel arrangement?
